Hooghly << HOOG lee >> River, in Bengal, India, is one of the channels through which the Ganges River flows into the Bay of Bengal. However, the main flow of water from the Ganges has shifted to more easterly channels. The Hooghly flows south for about 150 miles (241 kilometers). Large ships can sail up the Hooghly River as far as Kolkata, 86 miles (138 kilometers) from the sea.